Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 207-837-2 | CAS number: 497-18-7
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
The estimated half-lives at 25°C of the test item are:
pH 4: Estimated half life at 25°C: 84.5 days
pH 7: Estimated half life at 25°C: 449 days
pH 9: Estimated half life at 25°C: >1 year
Key value for chemical safety assessment
- Half-life for hydrolysis:
- 449 d
- at the temperature of:
- 25 °C
Additional information
The determination was carried out using a procedure designed to be compatible with Method C7 Abiotic Degradation, Hydrolysis as a Function of pH of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 111 of the OECD Guidelines for Testing of Chemicals, 13 April 2004.
The kinetics of the study has been determined to be consistent with that of a pseudo-first order reaction.
It has been observed that the rate of hydrolysis increases with a decrease in pH.
The rate constants and estimated half-lives at 25°C of the test item are shown in the following table:
pH |
Rate constant (hr-1) |
Estimated half-life at 25°C |
4 |
3.42 x 10-4 |
84.5 days |
7 |
6.43 x 10-5 |
449 days |
9 |
- |
>1 year |
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
